1 /**************************************************************************
3 * Copyright 2008 VMware, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 * Polygon stipple stage: implement polygon stipple with texture map and
30 * fragment program. The fragment program samples the texture using the
31 * fragment window coordinate register and does a fragment kill for the
32 * stipple-failing fragments.
38 #include "pipe/p_context.h"
39 #include "pipe/p_defines.h"
40 #include "pipe/p_shader_tokens.h"
41 #include "util/u_inlines.h"
43 #include "util/u_format.h"
44 #include "util/u_math.h"
45 #include "util/u_memory.h"
46 #include "util/u_sampler.h"
48 #include "tgsi/tgsi_transform.h"
49 #include "tgsi/tgsi_dump.h"
51 #include "draw_context.h"
52 #include "draw_pipe.h"
55 /** Approx number of new tokens for instructions in pstip_transform_inst() */
56 #define NUM_NEW_TOKENS 53
60 * Subclass of pipe_shader_state to carry extra fragment shader info.
62 struct pstip_fragment_shader
64 struct pipe_shader_state state
;
72 * Subclass of draw_stage
76 struct draw_stage stage
;
79 struct pipe_resource
*texture
;
80 struct pipe_sampler_view
*sampler_view
;
82 uint num_sampler_views
;
85 * Currently bound state
87 struct pstip_fragment_shader
*fs
;
89 void *samplers
[PIPE_MAX_SAMPLERS
];
90 struct pipe_sampler_view
*sampler_views
[PIPE_MAX_SHADER_SAMPLER_VIEWS
];
91 const struct pipe_poly_stipple
*stipple
;
95 * Driver interface/override functions
97 void * (*driver_create_fs_state
)(struct pipe_context
*,
98 const struct pipe_shader_state
*);
99 void (*driver_bind_fs_state
)(struct pipe_context
*, void *);
100 void (*driver_delete_fs_state
)(struct pipe_context
*, void *);
102 void (*driver_bind_sampler_states
)(struct pipe_context
*, unsigned,
103 unsigned, unsigned, void **);
105 void (*driver_set_sampler_views
)(struct pipe_context
*,
106 unsigned shader
, unsigned start
,
108 struct pipe_sampler_view
**);
110 void (*driver_set_polygon_stipple
)(struct pipe_context
*,
111 const struct pipe_poly_stipple
*);
113 struct pipe_context
*pipe
;
119 * Subclass of tgsi_transform_context, used for transforming the
120 * user's fragment shader to add the extra texture sample and fragment kill
123 struct pstip_transform_context
{
124 struct tgsi_transform_context base
;
125 uint tempsUsed
; /**< bitmask */
128 uint samplersUsed
; /**< bitfield of samplers used */
130 int freeSampler
; /** an available sampler for the pstipple */
131 int texTemp
; /**< temp registers */
137 * TGSI declaration transform callback.
138 * Look for a free sampler, a free input attrib, and two free temp regs.
141 pstip_transform_decl(struct tgsi_transform_context
*ctx
,
142 struct tgsi_full_declaration
*decl
)
144 struct pstip_transform_context
*pctx
= (struct pstip_transform_context
*) ctx
;
146 if (decl
->Declaration
.File
== TGSI_FILE_SAMPLER
) {
148 for (i
= decl
->Range
.First
;
149 i
<= decl
->Range
.Last
; i
++) {
150 pctx
->samplersUsed
|= 1 << i
;
153 else if (decl
->Declaration
.File
== TGSI_FILE_SAMPLER_VIEW
) {
154 pctx
->hasSview
= true;
156 else if (decl
->Declaration
.File
== TGSI_FILE_INPUT
) {
157 pctx
->maxInput
= MAX2(pctx
->maxInput
, (int) decl
->Range
.Last
);
158 if (decl
->Semantic
.Name
== TGSI_SEMANTIC_POSITION
)
159 pctx
->wincoordInput
= (int) decl
->Range
.First
;
161 else if (decl
->Declaration
.File
== TGSI_FILE_TEMPORARY
) {
163 for (i
= decl
->Range
.First
;
164 i
<= decl
->Range
.Last
; i
++) {
165 pctx
->tempsUsed
|= (1 << i
);
169 ctx
->emit_declaration(ctx
, decl
);
174 * TGSI immediate declaration transform callback.
175 * We're just counting the number of immediates here.
178 pstip_transform_immed(struct tgsi_transform_context
*ctx
,
179 struct tgsi_full_immediate
*immed
)
181 struct pstip_transform_context
*pctx
= (struct pstip_transform_context
*) ctx
;
182 ctx
->emit_immediate(ctx
, immed
); /* emit to output shader */
188 * Find the lowest zero bit in the given word, or -1 if bitfield is all ones.
191 free_bit(uint bitfield
)
193 return ffs(~bitfield
) - 1;
198 * TGSI transform prolog callback.
201 pstip_transform_prolog(struct tgsi_transform_context
*ctx
)
203 struct pstip_transform_context
*pctx
= (struct pstip_transform_context
*) ctx
;
207 /* find free sampler */
208 pctx
->freeSampler
= free_bit(pctx
->samplersUsed
);
209 if (pctx
->freeSampler
>= PIPE_MAX_SAMPLERS
)
210 pctx
->freeSampler
= PIPE_MAX_SAMPLERS
- 1;
212 if (pctx
->wincoordInput
< 0)
213 wincoordInput
= pctx
->maxInput
+ 1;
215 wincoordInput
= pctx
->wincoordInput
;
217 /* find one free temp reg */
218 for (i
= 0; i
< 32; i
++) {
219 if ((pctx
->tempsUsed
& (1 << i
)) == 0) {
220 /* found a free temp */
221 if (pctx
->texTemp
< 0)
227 assert(pctx
->texTemp
>= 0);
229 if (pctx
->wincoordInput
< 0) {
230 /* declare new position input reg */
231 tgsi_transform_input_decl(ctx
, wincoordInput
,
232 TGSI_SEMANTIC_POSITION
, 1,
233 TGSI_INTERPOLATE_LINEAR
);
236 /* declare new sampler */
237 tgsi_transform_sampler_decl(ctx
, pctx
->freeSampler
);
239 /* if the src shader has SVIEW decl's for each SAMP decl, we
240 * need to continue the trend and ensure there is a matching
241 * SVIEW for the new SAMP we just created
243 if (pctx
->hasSview
) {
244 tgsi_transform_sampler_view_decl(ctx
,
247 TGSI_RETURN_TYPE_FLOAT
);
250 /* declare new temp regs */
251 tgsi_transform_temp_decl(ctx
, pctx
->texTemp
);
253 /* emit immediate = {1/32, 1/32, 1, 1}
254 * The index/position of this immediate will be pctx->numImmed
256 tgsi_transform_immediate_decl(ctx
, 1.0/32.0, 1.0/32.0, 1.0, 1.0);
259 * Insert new MUL/TEX/KILL_IF instructions at start of program
260 * Take gl_FragCoord, divide by 32 (stipple size), sample the
261 * texture and kill fragment if needed.
263 * We'd like to use non-normalized texcoords to index into a RECT
264 * texture, but we can only use GL_REPEAT wrap mode with normalized
268 /* MUL texTemp, INPUT[wincoord], 1/32; */
269 tgsi_transform_op2_inst(ctx
, TGSI_OPCODE_MUL
,
270 TGSI_FILE_TEMPORARY
, pctx
->texTemp
,
272 TGSI_FILE_INPUT
, wincoordInput
,
273 TGSI_FILE_IMMEDIATE
, pctx
->numImmed
);
275 /* TEX texTemp, texTemp, sampler; */
276 tgsi_transform_tex_2d_inst(ctx
,
277 TGSI_FILE_TEMPORARY
, pctx
->texTemp
,
278 TGSI_FILE_TEMPORARY
, pctx
->texTemp
,
281 /* KILL_IF -texTemp.wwww; # if -texTemp < 0, KILL fragment */
282 tgsi_transform_kill_inst(ctx
,
283 TGSI_FILE_TEMPORARY
, pctx
->texTemp
,
284 TGSI_SWIZZLE_W
, TRUE
);
290 * Generate the frag shader we'll use for doing polygon stipple.
291 * This will be the user's shader prefixed with a TEX and KIL instruction.
294 generate_pstip_fs(struct pstip_stage
*pstip
)
296 const struct pipe_shader_state
*orig_fs
= &pstip
->fs
->state
;
297 /*struct draw_context *draw = pstip->stage.draw;*/
298 struct pipe_shader_state pstip_fs
;
299 struct pstip_transform_context transform
;
300 const uint newLen
= tgsi_num_tokens(orig_fs
->tokens
) + NUM_NEW_TOKENS
;
302 pstip_fs
= *orig_fs
; /* copy to init */
303 pstip_fs
.tokens
= tgsi_alloc_tokens(newLen
);
304 if (pstip_fs
.tokens
== NULL
)
307 memset(&transform
, 0, sizeof(transform
));
308 transform
.wincoordInput
= -1;
309 transform
.maxInput
= -1;
310 transform
.texTemp
= -1;
311 transform
.base
.prolog
= pstip_transform_prolog
;
312 transform
.base
.transform_declaration
= pstip_transform_decl
;
313 transform
.base
.transform_immediate
= pstip_transform_immed
;
315 tgsi_transform_shader(orig_fs
->tokens
,
316 (struct tgsi_token
*) pstip_fs
.tokens
,
317 newLen
, &transform
.base
);
320 tgsi_dump(orig_fs
->tokens
, 0);
321 tgsi_dump(pstip_fs
.tokens
, 0);
326 pstip
->fs
->sampler_unit
= transform
.freeSampler
;
327 assert(pstip
->fs
->sampler_unit
< PIPE_MAX_SAMPLERS
);
329 pstip
->fs
->pstip_fs
= pstip
->driver_create_fs_state(pstip
->pipe
, &pstip_fs
);
331 FREE((void *)pstip_fs
.tokens
);
333 if (!pstip
->fs
->pstip_fs
)
341 * Load texture image with current stipple pattern.
344 pstip_update_texture(struct pstip_stage
*pstip
)
346 static const uint bit31
= 1 << 31;
347 struct pipe_context
*pipe
= pstip
->pipe
;
348 struct pipe_transfer
*transfer
;
349 const uint
*stipple
= pstip
->state
.stipple
->stipple
;
353 data
= pipe_transfer_map(pipe
, pstip
->texture
, 0, 0,
354 PIPE_TRANSFER_WRITE
, 0, 0, 32, 32, &transfer
);
357 * Load alpha texture.
358 * Note: 0 means keep the fragment, 255 means kill it.
359 * We'll negate the texel value and use KILL_IF which kills if value
362 for (i
= 0; i
< 32; i
++) {
363 for (j
= 0; j
< 32; j
++) {
364 if (stipple
[i
] & (bit31
>> j
)) {
366 data
[i
* transfer
->stride
+ j
] = 0;
370 data
[i
* transfer
->stride
+ j
] = 255;
376 pipe_transfer_unmap(pipe
, transfer
);
381 * Create the texture map we'll use for stippling.
384 pstip_create_texture(struct pstip_stage
*pstip
)
386 struct pipe_context
*pipe
= pstip
->pipe
;
387 struct pipe_screen
*screen
= pipe
->screen
;
388 struct pipe_resource texTemp
;
389 struct pipe_sampler_view viewTempl
;
391 memset(&texTemp
, 0, sizeof(texTemp
));
392 texTemp
.target
= PIPE_TEXTURE_2D
;
393 texTemp
.format
= PIPE_FORMAT_A8_UNORM
; /* XXX verify supported by driver! */
394 texTemp
.last_level
= 0;
396 texTemp
.height0
= 32;
398 texTemp
.array_size
= 1;
399 texTemp
.bind
= PIPE_BIND_SAMPLER_VIEW
;
401 pstip
->texture
= screen
->resource_create(screen
, &texTemp
);
402 if (pstip
->texture
== NULL
)
405 u_sampler_view_default_template(&viewTempl
,
407 pstip
->texture
->format
);
408 pstip
->sampler_view
= pipe
->create_sampler_view(pipe
,
411 if (!pstip
->sampler_view
) {
420 * Create the sampler CSO that'll be used for stippling.
423 pstip_create_sampler(struct pstip_stage
*pstip
)
425 struct pipe_sampler_state sampler
;
426 struct pipe_context
*pipe
= pstip
->pipe
;
428 memset(&sampler
, 0, sizeof(sampler
));
429 sampler
.wrap_s
= PIPE_TEX_WRAP_REPEAT
;
430 sampler
.wrap_t
= PIPE_TEX_WRAP_REPEAT
;
431 sampler
.wrap_r
= PIPE_TEX_WRAP_REPEAT
;
432 sampler
.min_mip_filter
= PIPE_TEX_MIPFILTER_NONE
;
433 sampler
.min_img_filter
= PIPE_TEX_FILTER_NEAREST
;
434 sampler
.mag_img_filter
= PIPE_TEX_FILTER_NEAREST
;
435 sampler
.normalized_coords
= 1;
436 sampler
.min_lod
= 0.0f
;
437 sampler
.max_lod
= 0.0f
;
439 pstip
->sampler_cso
= pipe
->create_sampler_state(pipe
, &sampler
);
440 if (pstip
->sampler_cso
== NULL
)
448 * When we're about to draw our first stipple polygon in a batch, this function
449 * is called to tell the driver to bind our modified fragment shader.
452 bind_pstip_fragment_shader(struct pstip_stage
*pstip
)
454 struct draw_context
*draw
= pstip
->stage
.draw
;
455 if (!pstip
->fs
->pstip_fs
&&
456 !generate_pstip_fs(pstip
))
459 draw
->suspend_flushing
= TRUE
;
460 pstip
->driver_bind_fs_state(pstip
->pipe
, pstip
->fs
->pstip_fs
);
461 draw
->suspend_flushing
= FALSE
;
466 static inline struct pstip_stage
*
467 pstip_stage( struct draw_stage
*stage
)
469 return (struct pstip_stage
*) stage
;
474 pstip_first_tri(struct draw_stage
*stage
, struct prim_header
*header
)
476 struct pstip_stage
*pstip
= pstip_stage(stage
);
477 struct pipe_context
*pipe
= pstip
->pipe
;
478 struct draw_context
*draw
= stage
->draw
;
480 uint num_sampler_views
;
482 assert(stage
->draw
->rasterizer
->poly_stipple_enable
);
484 /* bind our fragprog */
485 if (!bind_pstip_fragment_shader(pstip
)) {
486 stage
->tri
= draw_pipe_passthrough_tri
;
487 stage
->tri(stage
, header
);
492 /* how many samplers? */
493 /* we'll use sampler/texture[pstip->sampler_unit] for the stipple */
494 num_samplers
= MAX2(pstip
->num_samplers
, pstip
->fs
->sampler_unit
+ 1);
495 num_sampler_views
= MAX2(pstip
->num_sampler_views
, num_samplers
);
497 /* plug in our sampler, texture */
498 pstip
->state
.samplers
[pstip
->fs
->sampler_unit
] = pstip
->sampler_cso
;
499 pipe_sampler_view_reference(&pstip
->state
.sampler_views
[pstip
->fs
->sampler_unit
],
500 pstip
->sampler_view
);
502 assert(num_samplers
<= PIPE_MAX_SAMPLERS
);
504 draw
->suspend_flushing
= TRUE
;
506 pstip
->driver_bind_sampler_states(pipe
, PIPE_SHADER_FRAGMENT
, 0,
507 num_samplers
, pstip
->state
.samplers
);
509 pstip
->driver_set_sampler_views(pipe
, PIPE_SHADER_FRAGMENT
, 0,
510 num_sampler_views
, pstip
->state
.sampler_views
);
512 draw
->suspend_flushing
= FALSE
;
514 /* now really draw first triangle */
515 stage
->tri
= draw_pipe_passthrough_tri
;
516 stage
->tri(stage
, header
);
521 pstip_flush(struct draw_stage
*stage
, unsigned flags
)
523 struct draw_context
*draw
= stage
->draw
;
524 struct pstip_stage
*pstip
= pstip_stage(stage
);
525 struct pipe_context
*pipe
= pstip
->pipe
;
527 stage
->tri
= pstip_first_tri
;
528 stage
->next
->flush( stage
->next
, flags
);
530 /* restore original frag shader, texture, sampler state */
531 draw
->suspend_flushing
= TRUE
;
532 pstip
->driver_bind_fs_state(pipe
, pstip
->fs
? pstip
->fs
->driver_fs
: NULL
);
534 pstip
->driver_bind_sampler_states(pipe
, PIPE_SHADER_FRAGMENT
, 0,
536 pstip
->state
.samplers
);
538 pstip
->driver_set_sampler_views(pipe
, PIPE_SHADER_FRAGMENT
, 0,
539 pstip
->num_sampler_views
,
540 pstip
->state
.sampler_views
);
542 draw
->suspend_flushing
= FALSE
;
547 pstip_reset_stipple_counter(struct draw_stage
*stage
)
549 stage
->next
->reset_stipple_counter( stage
->next
);
554 pstip_destroy(struct draw_stage
*stage
)
556 struct pstip_stage
*pstip
= pstip_stage(stage
);
559 for (i
= 0; i
< PIPE_MAX_SHADER_SAMPLER_VIEWS
; i
++) {
560 pipe_sampler_view_reference(&pstip
->state
.sampler_views
[i
], NULL
);
563 pstip
->pipe
->delete_sampler_state(pstip
->pipe
, pstip
->sampler_cso
);
565 pipe_resource_reference(&pstip
->texture
, NULL
);
567 if (pstip
->sampler_view
) {
568 pipe_sampler_view_reference(&pstip
->sampler_view
, NULL
);
571 draw_free_temp_verts( stage
);
576 /** Create a new polygon stipple drawing stage object */
577 static struct pstip_stage
*
578 draw_pstip_stage(struct draw_context
*draw
, struct pipe_context
*pipe
)
580 struct pstip_stage
*pstip
= CALLOC_STRUCT(pstip_stage
);
586 pstip
->stage
.draw
= draw
;
587 pstip
->stage
.name
= "pstip";
588 pstip
->stage
.next
= NULL
;
589 pstip
->stage
.point
= draw_pipe_passthrough_point
;
590 pstip
->stage
.line
= draw_pipe_passthrough_line
;
591 pstip
->stage
.tri
= pstip_first_tri
;
592 pstip
->stage
.flush
= pstip_flush
;
593 pstip
->stage
.reset_stipple_counter
= pstip_reset_stipple_counter
;
594 pstip
->stage
.destroy
= pstip_destroy
;
596 if (!draw_alloc_temp_verts( &pstip
->stage
, 8 ))
603 pstip
->stage
.destroy( &pstip
->stage
);
609 static struct pstip_stage
*
610 pstip_stage_from_pipe(struct pipe_context
*pipe
)
612 struct draw_context
*draw
= (struct draw_context
*) pipe
->draw
;
613 return pstip_stage(draw
->pipeline
.pstipple
);
618 * This function overrides the driver's create_fs_state() function and
619 * will typically be called by the state tracker.
622 pstip_create_fs_state(struct pipe_context
*pipe
,
623 const struct pipe_shader_state
*fs
)
625 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
626 struct pstip_fragment_shader
*pstipfs
= CALLOC_STRUCT(pstip_fragment_shader
);
629 pstipfs
->state
.tokens
= tgsi_dup_tokens(fs
->tokens
);
632 pstipfs
->driver_fs
= pstip
->driver_create_fs_state(pstip
->pipe
, fs
);
640 pstip_bind_fs_state(struct pipe_context
*pipe
, void *fs
)
642 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
643 struct pstip_fragment_shader
*pstipfs
= (struct pstip_fragment_shader
*) fs
;
647 pstip
->driver_bind_fs_state(pstip
->pipe
,
648 (pstipfs
? pstipfs
->driver_fs
: NULL
));
653 pstip_delete_fs_state(struct pipe_context
*pipe
, void *fs
)
655 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
656 struct pstip_fragment_shader
*pstipfs
= (struct pstip_fragment_shader
*) fs
;
658 pstip
->driver_delete_fs_state(pstip
->pipe
, pstipfs
->driver_fs
);
660 if (pstipfs
->pstip_fs
)
661 pstip
->driver_delete_fs_state(pstip
->pipe
, pstipfs
->pstip_fs
);
663 FREE((void*)pstipfs
->state
.tokens
);
669 pstip_bind_sampler_states(struct pipe_context
*pipe
, unsigned shader
,
670 unsigned start
, unsigned num
, void **sampler
)
672 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
677 if (shader
== PIPE_SHADER_FRAGMENT
) {
679 memcpy(pstip
->state
.samplers
, sampler
, num
* sizeof(void *));
680 for (i
= num
; i
< PIPE_MAX_SAMPLERS
; i
++) {
681 pstip
->state
.samplers
[i
] = NULL
;
683 pstip
->num_samplers
= num
;
687 pstip
->driver_bind_sampler_states(pstip
->pipe
, shader
, start
, num
, sampler
);
692 pstip_set_sampler_views(struct pipe_context
*pipe
,
693 unsigned shader
, unsigned start
, unsigned num
,
694 struct pipe_sampler_view
**views
)
696 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
699 if (shader
== PIPE_SHADER_FRAGMENT
) {
701 for (i
= 0; i
< num
; i
++) {
702 pipe_sampler_view_reference(&pstip
->state
.sampler_views
[start
+ i
],
705 pstip
->num_sampler_views
= num
;
709 pstip
->driver_set_sampler_views(pstip
->pipe
, shader
, start
, num
, views
);
714 pstip_set_polygon_stipple(struct pipe_context
*pipe
,
715 const struct pipe_poly_stipple
*stipple
)
717 struct pstip_stage
*pstip
= pstip_stage_from_pipe(pipe
);
720 pstip
->state
.stipple
= stipple
;
723 pstip
->driver_set_polygon_stipple(pstip
->pipe
, stipple
);
725 pstip_update_texture(pstip
);
730 * Called by drivers that want to install this polygon stipple stage
731 * into the draw module's pipeline. This will not be used if the
732 * hardware has native support for polygon stipple.
735 draw_install_pstipple_stage(struct draw_context
*draw
,
736 struct pipe_context
*pipe
)
738 struct pstip_stage
*pstip
;
740 pipe
->draw
= (void *) draw
;
743 * Create / install pgon stipple drawing / prim stage
745 pstip
= draw_pstip_stage( draw
, pipe
);
749 draw
->pipeline
.pstipple
= &pstip
->stage
;
751 /* save original driver functions */
752 pstip
->driver_create_fs_state
= pipe
->create_fs_state
;
753 pstip
->driver_bind_fs_state
= pipe
->bind_fs_state
;
754 pstip
->driver_delete_fs_state
= pipe
->delete_fs_state
;
756 pstip
->driver_bind_sampler_states
= pipe
->bind_sampler_states
;
757 pstip
->driver_set_sampler_views
= pipe
->set_sampler_views
;
758 pstip
->driver_set_polygon_stipple
= pipe
->set_polygon_stipple
;
760 /* create special texture, sampler state */
761 if (!pstip_create_texture(pstip
))
764 if (!pstip_create_sampler(pstip
))
767 /* override the driver's functions */
768 pipe
->create_fs_state
= pstip_create_fs_state
;
769 pipe
->bind_fs_state
= pstip_bind_fs_state
;
770 pipe
->delete_fs_state
= pstip_delete_fs_state
;
772 pipe
->bind_sampler_states
= pstip_bind_sampler_states
;
773 pipe
->set_sampler_views
= pstip_set_sampler_views
;
774 pipe
->set_polygon_stipple
= pstip_set_polygon_stipple
;
780 pstip
->stage
.destroy( &pstip
->stage
);